CVE-2018-0234: Input Validation
First published: Wed May 02 2018(Updated: )
A vulnerability in the implementation of Point-to-Point Tunneling Protocol (PPTP) functionality in Cisco Aironet 1810, 1830, and 1850 Series Access Points could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient validation of Generic Routing Encapsulation (GRE) frames that pass through the data plane of an affected access point. An attacker could exploit this vulnerability by initiating a PPTP connection to an affected access point from a device that is registered to the same wireless network as the access point and sending a malicious GRE frame through the data plane of the access point. A successful exploit could allow the attacker to cause the NSS core process on the affected access point to crash, which would cause the access point to reload and result in a DoS condition. This vulnerability affects Cisco Aironet 1810, 1830, and 1850 Series Access Points that are running Cisco Mobility Express Software Release 8.4.100.0, 8.5.103.0, or 8.5.105.0 and are configured as a master, subordinate, or standalone access point. Cisco Bug IDs: CSCvf73890.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Aironet Access Point Software | =8.4\(100.0\) | |
| Cisco Aironet Access Point Software | =8.5\(103.0\) | |
| Cisco Aironet Access Point Software | =8.5\(105.0\) |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2018-0234?
The severity of CVE-2018-0234 is high with a rating of 8.6.
How does CVE-2018-0234 affect Cisco Aironet Access Point Software?
CVE-2018-0234 affects Cisco Aironet Access Point Software versions 8.4(100.0), 8.5(103.0), and 8.5(105.0).
What is the vulnerability description for CVE-2018-0234?
CVE-2018-0234 is a vulnerability in the implementation of Point-to-Point Tunneling Protocol (PPTP) functionality in Cisco Aironet 1810, 1830, and 1850 Series Access Points that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.
What is the Common Weakness Enumeration (CWE) ID for CVE-2018-0234?
CVE-2018-0234 is associated with CWE-20.
Where can I find more information about CVE-2018-0234?
You can find more information about CVE-2018-0234 on the following websites: [SecurityFocus](http://www.securityfocus.com/bid/104081), [SecurityTracker](http://www.securitytracker.com/id/1040820), and [Cisco Security Advisory](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-ap-ptp).
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- agent/weakness
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- agent/references
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- agent/event
- agent/description
- agent/last-modified-date
- agent/softwarecombine
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- collector/mitre-cve
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- vendor/cisco
- canonical/cisco aironet access point software
- version/cisco aironet access point software/8.4\(100.0\)
- version/cisco aironet access point software/8.5\(103.0\)
- version/cisco aironet access point software/8.5\(105.0\)